Direct observation of intraionic and interconfigurational excitations in an intermediate-valence compound by Raman spectroscopy

Journal Article · Mon Jan 21 00:00:00 EST 1985 · Phys. Rev. Lett.; (United States)

DOI:https://doi.org/10.1103/PhysRevLett.54.213· OSTI ID:6067398

Zirngiebl, E; Blumenroeder, S; Guentherodt, G; Jayaraman, A; Batlogg, B; Croft, M

Intraionic spin-orbit--split multiplet levels have been observed by electronic Raman scattering in the intermediate-valence compound EuPd/sub 2/Si/sub 2/. From the temperature dependence of the Raman peak positions and widths the interconfigurational excitation energy E/sub x/ and an upper limit of the interconfigurational mixing width T/sub f/, respectively, have been obtained. This is the first spectroscopic support for the underlying assumptions of the ionic interconfigurational fluctuation model that has been proposed to describe intermediate valence.

• Research Organization: II. Physikalisches Institut, Universitat Koeln, 5000 Koeln 41, Federal Republic of Germany
• OSTI ID: 6067398
• Journal Information: Phys. Rev. Lett.; (United States), Vol. 54:3
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
EUROPIUM SILICIDES
L-S COUPLING
RAMAN SPECTROSCOPY
PALLADIUM SILICIDES
ENERGY LOSSES
EXPERIMENTAL DATA
LOW TEMPERATURE
MEDIUM TEMPERATURE
MULTIPLETS
ROTATIONAL STATES
TEMPERATURE DEPENDENCE
ULTRALOW TEMPERATURE
VERY LOW TEMPERATURE
COUPLING
DATA
ENERGY LEVELS
EUROPIUM COMPOUNDS
EXCITED STATES
INFORMATION
INTERMEDIATE COUPLING
LASER SPECTROSCOPY
LOSSES
NUMERICAL DATA
PALLADIUM COMPOUNDS
RARE EARTH COMPOUNDS
SILICIDES
SILICON COMPOUNDS
SPECTROSCOPY
TRANSITION ELEMENT COMPOUNDS
360603* - Materials- Properties